Predictive equation for post-mortem interval using spectrophotometric values of post-mortem lividity: A pilot study

Yosuke Usumoto, Keiko Kudo, Akiko Tsuji, Yoko Ihama, Noriaki Ikeda

研究成果: ジャーナルへの寄稿記事

抄録

The colour of post-mortem lividity and control skin of 86 cadavers was measured spectrophotometrically to obtain L * (value), a * (chroma) and b * (hue) values. In addition, left heart blood (n = 58), right heart blood (n = 57) and blood from the femoral vein (n = 21) were measured. Using these data, we analysed the relationship between post-mortem lividity, control skin and blood colours. L * of post-mortem lividity (L * p ) and control skin (L * c ) were strongly correlated (r = 0.64). a * and b * of post-mortem lividity (a * p and b * p ) significantly increased with an increasing post-mortem interval (PMI) but r 2 values were low (0.11 and 0.070, respectively). Predictive equations for post-mortem lividity colour (L * p , a * p and b * p ) were developed using control skin colour (L * c , a * c and b * c ) and autopsy findings for the first time. The predictive equation for L * p explained almost 65% of the observed L * p . We created predictive equations for PMI with and without blood colour values, and the most accurate equation, which did not use blood colour values, made it possible to estimate PMI within ± 10.29 h. Further study of these equations will help us to understand the factors that affect post-mortem lividity colour and increase the accuracy of equations for predicting post-mortem lividity colour and PMI.

元の言語英語
ページ(範囲)47-55
ページ数9
ジャーナルForensic Science International
297
DOI
出版物ステータス出版済み - 4 1 2019

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Color
Skin Pigmentation
Skin
Femoral Vein
Cadaver
Autopsy

All Science Journal Classification (ASJC) codes

  • Pathology and Forensic Medicine

これを引用

Predictive equation for post-mortem interval using spectrophotometric values of post-mortem lividity : A pilot study. / Usumoto, Yosuke; Kudo, Keiko; Tsuji, Akiko; Ihama, Yoko; Ikeda, Noriaki.

:: Forensic Science International, 巻 297, 01.04.2019, p. 47-55.

研究成果: ジャーナルへの寄稿記事

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AB - The colour of post-mortem lividity and control skin of 86 cadavers was measured spectrophotometrically to obtain L * (value), a * (chroma) and b * (hue) values. In addition, left heart blood (n = 58), right heart blood (n = 57) and blood from the femoral vein (n = 21) were measured. Using these data, we analysed the relationship between post-mortem lividity, control skin and blood colours. L * of post-mortem lividity (L * p ) and control skin (L * c ) were strongly correlated (r = 0.64). a * and b * of post-mortem lividity (a * p and b * p ) significantly increased with an increasing post-mortem interval (PMI) but r 2 values were low (0.11 and 0.070, respectively). Predictive equations for post-mortem lividity colour (L * p , a * p and b * p ) were developed using control skin colour (L * c , a * c and b * c ) and autopsy findings for the first time. The predictive equation for L * p explained almost 65% of the observed L * p . We created predictive equations for PMI with and without blood colour values, and the most accurate equation, which did not use blood colour values, made it possible to estimate PMI within ± 10.29 h. Further study of these equations will help us to understand the factors that affect post-mortem lividity colour and increase the accuracy of equations for predicting post-mortem lividity colour and PMI.

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